unix 在groff mm中定义header并不会在第一页中改变它

im9ewurl 于 8个月前发布在 Unix

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我尝试使用mm宏在groff中定义一个自定义头。
如果我定义.PH，它在第2页生效，但在第1页无效。
为什么会这样？

% cat sample2.mm 
\" ***************
\" PAGE DEFINITION
\" ***************
.pl 29.7c           \" PAGE LENGTH
.po 1.5c            \" PAGE OFFSET
.ll 18.0c           \" LINE LENGTH 
.nr pg*top-margin 0     \" MARGIN VARIABLES
.nr pg*foot-margin 0
.nr pg*block-size 0
.nr pg*footer-size 5        \" 1v+footer+even/odd footer+2v
.nr pg*header-size 7        \" 3v+header+even/odd header+2v
.nr pg*extra-footer-size 0
.nr pg*extra-header-size 0
\" ****************
\" HEADER
\" ****************
.PH "'LEFT'CENTER'RIGHT'"
\" ****************
\" FOOTER
\" ****************
.BS             \" CUSTOM FOOTER
CUSTOM FOOTER BLOCK
.BE
\" **************
\" BEGIN DOCUMENT
\" **************
.P
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

.AV "Approver" "Company" [ ]
.SK
.P
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

字符串
这就是我得到的
对于第1页，页眉是默认值：