KAUGER, Justice.
Four issues are presented by the petition for certiorari: 1) whether, pursuant to 12 O.S.1981 § 655,1 notice must be given by the service and return of summons on the party; 2) whether, under Rule 1.11, 12 [271]*271O.S.Supp.1986, Ch. 15, App. 2,2 an appellant may affect a timely appeal by filing a petition in error within thirty days after the trial court resolves a reserved attorney fee issue; 3) whether petitions for new trial filed pursuant to 12 O.S.1981 § 655 need be accompanied by an affidavit or contain specific allegations of due diligence; and 4) whether, pursuant to 12 O.S.1981 § 655, a party filing a petition for new trial on grounds of newly discovered evidence is entitled to a hearing prior to dismissal of the petition. We find that: 1) pursuant to 12 O.S.1981 § 655,3 service may be accomplished by the service and return of summons on the party or by notice to the attorney of record in the original cause;4 2) under Rule 1.11, 12 O.S.Supp.1986, Ch. 15, App. 2, an appellant may affect a timely appeal by filing a petition in error within thirty days of the trial court’s denial of a motion for new trial on the merits of a judgment, or he/she may wait until after the trial court resolves a reserved attorney fee issue;5 3) petitions for new trial filed pursuant to 12 O.S.1981 § 655 need not be accompanied by an affidavit or contain specific allegations of due diligence; and 4) pursuant to 12 O.S.1981 § 655, a party filing a petition for new trial on grounds of newly discovered evidence is entitled to a hearing prior to dismissal of the petition.
PACTS
On November 10, 1986, the jury returned a verdict in favor of the appellee, Harry Heirshberg (Heirshberg/lessee). Heirsh-berg also prevailed on a counterclaim against the appellant, Ben M. Slater (Slater/land owner). Slater filed a motion for new trial on November 13, 1986. Heirsh-berg filed an application for $15,450.00 in attorney fees on December 2, 1986. Reserving the attorney fee issue, the trial court denied Slater’s motion for new trial by letter dated September 9, 1987. Slater did not appeal the denial of a new trial.
The trial court awarded Heirshberg $12,-118.75 in attorneys fees on December 3, 1987. On December 2, 1988, Slater filed a petition for new trial on the basis of newly discovered evidence. Heirshberg filed a motion to dismiss the petition for new trial on January 23, 1989. Heirshberg asserted that the trial court lacked authority to grant the petition because of lack of service and because the petition was insufficient to support the award of a new trial.6 [272]*272On March 21, 1989, the trial court sustained the motion to dismiss finding that the time for appeal ran from its order dismissing the first motion for new trial rather than from the date it ruled on the attorney fee issue.7 The Court of Appeals reversed finding that the date of the trial court’s decision on the attorney fee issue governed the time for appeal and that a petition for new trial filed pursuant to 12 O.S.1981 § 655 did not require verification or supporting affidavits. We granted cer-tiorari on November 5, 1991.
I.
PURSUANT TO 12 O.S.1981 § 655, SERVICE MAY BE ACCOMPLISHED BY THE SERVICE AND RETURN OF SUMMONS ON THE PARTY OR BY NOTICE TO THE ATTORNEY OF RECORD IN THE ORIGINAL CAUSE.
Heirshberg argues that to accomplish service, Slater was required to have him personally served with summons. Slater insists that service may be accomplished pursuant to 12 O.S.1981 § 655 by notice to the attorney of record in the original cause. We agree.
Title 12 O.S.1981 § 655 provides that notice may be accomplished by a service of summons on the party or by serving the attorney of record in the original case8 In Richardson v. Davis, 439 P.2d 949, 951 (Okla.1968), this Court considered the necessity of notice when a petition for new trial is filed. The Court found that a petition for new trial filed pursuant to 12 O.S.1961 § 6559 required a petition and issuance, service and return of summons, or constructive notice by substitute service or process, or notice to the attorney of record for the defendant in the original action. The language of the 1961 statute referring to notice is identical to that used in 12 O.S.1981 § 655. Here, no summons was issued to the party;10 but the attorney of record was mailed a copy of the petition for new trial, and he responded with a motion to dismiss. Notice was sufficient.
II.
UNDER RULE 1.11, 12 O.S.SUPP.1986, CH. 15, APP. 2, AN APPELLANT MAY AFFECT A TIMELY APPEAL BY FILING A PETITION IN ERROR WITHIN THIRTY DAYS OF THE TRIAL COURT’S DENIAL OF A MOTION FOR NEW TRIAL ON THE MERITS OF A JUDGMENT, OR HE/ SHE MAY WAIT UNTIL AFTER THE COURT RESOLVES THE ATTORNEY FEE ISSUE.
Heirshberg insists that Slater’s motion for new trial based on newly discovered evidence was untimely because it was filed more than a year after the trial court’s judgment on the substantive issues. Slater [273]*273asserts that under Rule 1.11, 12 O.S.Supp. 1986, Ch. 15, App. 2,11 an appellant may affect a timely appeal by filing a petition in error within thirty days after the court resolves a reserved attorney fee issue.
In Timmons Oil Co. v. Norman, 794 P.2d 400-01 (Okla.1990), we found that pursuant to Rule 1.11, 12 O.S.Supp.1986, Ch. 15, App. 2,12 an appellant could affect a timely appeal by either filing a petition in error within thirty days of the trial court’s denial of a motion for new trial on the merits of a judgment, or he/she could wait until after the trial court resolved a reserved attorney fee issue and file a petition in error within thirty days of the ruling on the attorney fees.13
III.
PETITIONS FOR NEW TRIAL FILED PURSUANT TO 12 O.S.1981 § 655 NEED NOT BE ACCOMPANIED BY AN AFFIDAVIT OR CONTAIN SPECIFIC ALLEGATIONS OF DUE DILIGENCE.
Heirshberg argues that the motion for new trial was insufficient because it was not accompanied by a supporting affidavit and did not contain specific allegations of due diligence. Slater contends that a petition for new trial, unlike a motion for new trial, need not be accompanied by an affidavit and that there is no requirement to plead due diligence with particularity.
Although 12 O.S.1981 § 65414 contains a requirement that a motion for [274]*274new trial must be accompanied by an affidavit, there is no such requirement in § 655 for a petition for new trial on the grounds of newly discovered evidence. Unless specifically required by rule or statute, pleadings need not be verified or accompanied by an affidavit.15 Section 655 provides that if the discovery of new evidence occurs more than ten days after judgment is rendered that an application is to be made by petition filed, in the original case, as in other cases. The plain language of § 655, requiring that petitions be filed as in other cases, refutes the dissent’s assertion that a petition for new trial is not governed by the pleading code. Title 12 O.S.Supp.1987 § 2011 provides in pertinent part:
“...
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KAUGER, Justice.
Four issues are presented by the petition for certiorari: 1) whether, pursuant to 12 O.S.1981 § 655,1 notice must be given by the service and return of summons on the party; 2) whether, under Rule 1.11, 12 [271]*271O.S.Supp.1986, Ch. 15, App. 2,2 an appellant may affect a timely appeal by filing a petition in error within thirty days after the trial court resolves a reserved attorney fee issue; 3) whether petitions for new trial filed pursuant to 12 O.S.1981 § 655 need be accompanied by an affidavit or contain specific allegations of due diligence; and 4) whether, pursuant to 12 O.S.1981 § 655, a party filing a petition for new trial on grounds of newly discovered evidence is entitled to a hearing prior to dismissal of the petition. We find that: 1) pursuant to 12 O.S.1981 § 655,3 service may be accomplished by the service and return of summons on the party or by notice to the attorney of record in the original cause;4 2) under Rule 1.11, 12 O.S.Supp.1986, Ch. 15, App. 2, an appellant may affect a timely appeal by filing a petition in error within thirty days of the trial court’s denial of a motion for new trial on the merits of a judgment, or he/she may wait until after the trial court resolves a reserved attorney fee issue;5 3) petitions for new trial filed pursuant to 12 O.S.1981 § 655 need not be accompanied by an affidavit or contain specific allegations of due diligence; and 4) pursuant to 12 O.S.1981 § 655, a party filing a petition for new trial on grounds of newly discovered evidence is entitled to a hearing prior to dismissal of the petition.
PACTS
On November 10, 1986, the jury returned a verdict in favor of the appellee, Harry Heirshberg (Heirshberg/lessee). Heirsh-berg also prevailed on a counterclaim against the appellant, Ben M. Slater (Slater/land owner). Slater filed a motion for new trial on November 13, 1986. Heirsh-berg filed an application for $15,450.00 in attorney fees on December 2, 1986. Reserving the attorney fee issue, the trial court denied Slater’s motion for new trial by letter dated September 9, 1987. Slater did not appeal the denial of a new trial.
The trial court awarded Heirshberg $12,-118.75 in attorneys fees on December 3, 1987. On December 2, 1988, Slater filed a petition for new trial on the basis of newly discovered evidence. Heirshberg filed a motion to dismiss the petition for new trial on January 23, 1989. Heirshberg asserted that the trial court lacked authority to grant the petition because of lack of service and because the petition was insufficient to support the award of a new trial.6 [272]*272On March 21, 1989, the trial court sustained the motion to dismiss finding that the time for appeal ran from its order dismissing the first motion for new trial rather than from the date it ruled on the attorney fee issue.7 The Court of Appeals reversed finding that the date of the trial court’s decision on the attorney fee issue governed the time for appeal and that a petition for new trial filed pursuant to 12 O.S.1981 § 655 did not require verification or supporting affidavits. We granted cer-tiorari on November 5, 1991.
I.
PURSUANT TO 12 O.S.1981 § 655, SERVICE MAY BE ACCOMPLISHED BY THE SERVICE AND RETURN OF SUMMONS ON THE PARTY OR BY NOTICE TO THE ATTORNEY OF RECORD IN THE ORIGINAL CAUSE.
Heirshberg argues that to accomplish service, Slater was required to have him personally served with summons. Slater insists that service may be accomplished pursuant to 12 O.S.1981 § 655 by notice to the attorney of record in the original cause. We agree.
Title 12 O.S.1981 § 655 provides that notice may be accomplished by a service of summons on the party or by serving the attorney of record in the original case8 In Richardson v. Davis, 439 P.2d 949, 951 (Okla.1968), this Court considered the necessity of notice when a petition for new trial is filed. The Court found that a petition for new trial filed pursuant to 12 O.S.1961 § 6559 required a petition and issuance, service and return of summons, or constructive notice by substitute service or process, or notice to the attorney of record for the defendant in the original action. The language of the 1961 statute referring to notice is identical to that used in 12 O.S.1981 § 655. Here, no summons was issued to the party;10 but the attorney of record was mailed a copy of the petition for new trial, and he responded with a motion to dismiss. Notice was sufficient.
II.
UNDER RULE 1.11, 12 O.S.SUPP.1986, CH. 15, APP. 2, AN APPELLANT MAY AFFECT A TIMELY APPEAL BY FILING A PETITION IN ERROR WITHIN THIRTY DAYS OF THE TRIAL COURT’S DENIAL OF A MOTION FOR NEW TRIAL ON THE MERITS OF A JUDGMENT, OR HE/ SHE MAY WAIT UNTIL AFTER THE COURT RESOLVES THE ATTORNEY FEE ISSUE.
Heirshberg insists that Slater’s motion for new trial based on newly discovered evidence was untimely because it was filed more than a year after the trial court’s judgment on the substantive issues. Slater [273]*273asserts that under Rule 1.11, 12 O.S.Supp. 1986, Ch. 15, App. 2,11 an appellant may affect a timely appeal by filing a petition in error within thirty days after the court resolves a reserved attorney fee issue.
In Timmons Oil Co. v. Norman, 794 P.2d 400-01 (Okla.1990), we found that pursuant to Rule 1.11, 12 O.S.Supp.1986, Ch. 15, App. 2,12 an appellant could affect a timely appeal by either filing a petition in error within thirty days of the trial court’s denial of a motion for new trial on the merits of a judgment, or he/she could wait until after the trial court resolved a reserved attorney fee issue and file a petition in error within thirty days of the ruling on the attorney fees.13
III.
PETITIONS FOR NEW TRIAL FILED PURSUANT TO 12 O.S.1981 § 655 NEED NOT BE ACCOMPANIED BY AN AFFIDAVIT OR CONTAIN SPECIFIC ALLEGATIONS OF DUE DILIGENCE.
Heirshberg argues that the motion for new trial was insufficient because it was not accompanied by a supporting affidavit and did not contain specific allegations of due diligence. Slater contends that a petition for new trial, unlike a motion for new trial, need not be accompanied by an affidavit and that there is no requirement to plead due diligence with particularity.
Although 12 O.S.1981 § 65414 contains a requirement that a motion for [274]*274new trial must be accompanied by an affidavit, there is no such requirement in § 655 for a petition for new trial on the grounds of newly discovered evidence. Unless specifically required by rule or statute, pleadings need not be verified or accompanied by an affidavit.15 Section 655 provides that if the discovery of new evidence occurs more than ten days after judgment is rendered that an application is to be made by petition filed, in the original case, as in other cases. The plain language of § 655, requiring that petitions be filed as in other cases, refutes the dissent’s assertion that a petition for new trial is not governed by the pleading code. Title 12 O.S.Supp.1987 § 2011 provides in pertinent part:
“... Except when otherwise specifically provided by rule or statute, pleadings need not be verified or accompanied by affidavit....”
Additionally, pleadings need contain only a short and plain statement of the claims showing that the pleader is entitled to relief.16 The pleading code does not require that due diligence in a petition for new trial on grounds of newly discovered evidence be stated with particularity.17
[275]*275IV.
PURSUANT TO 12 O.S.1981 § 655, A PARTY FILING A PETITION FOR NEW TRIAL ON GROUNDS OF NEWLY DISCOVERED EVIDENCE IS ENTITLED TO A HEARING PRIOR TO DISMISSAL OF THE PETITION.
Heirshberg contends that the petition for new trial was procedurally insufficient to support the grant of a new trial.18 Slater argues that he was entitled to a hearing before the dismissal of his petition for new trial on grounds of newly discovered evidence.
Title 12 O.S.1981 § 655 provides in pertinent part:
“... The facts stated in the petition shall be considered as denied without answer, and the case shall be heard and summarily decided after the expiration of twenty (20) days from such service and not more than sixty (60) days after such service, and the witnesses shall be examined in open court, or their depositions taken as in other cases ...” (Emphasis supplied.)
The determination of legislative intent controls judicial statutory interpretation; however, it is unnecessary to apply rules of construction to discern Legislative intent if the will is clearly expressed.19 The use of “shall” by the Legislature is normally considered as a legislative mandate equivalent to the term “must,” requiring interpretation as a command.20 The language and command of § 655 is clear and unambiguous. It provides that a petition for new trial “shall be heard.” Here, the trial court dismissed the petition for new trial before giving Slater an opportunity for a hearing.
Slater is entitled to a hearing on the petition for new trial. However, we express no opinion as to whether, after the hearing, the petition should be allowed.
CERTIORARI PREVIOUSLY GRANTED; COURT OF APPEALS OPINION VACATED; TRIAL COURT REVERSED.
HODGES, V.C.J., and HARGRAVE, SUMMERS and WATT, JJ. concur.
ALMA WILSON, J., concurs in part II, dissents from the remainder.
OPALA, C.J., and LAVENDER and SIMMS, JJ. dissent.