\\$1

.de HTML \! \ \! \ .html html
.html head .if !'\\$1'' .html title .HEAD .html head .html body
.. .de FSFIRST .de NOTES xx ._NOTES .rm _NOTES xx .em NOTES .da _NOTES .sp .B "Notes .sp .da .. .de FS .FSFIRST .rm FSFIRST .da _NOTES .. .de FE .sp .da .. .nr png -1 1 .de TS .ds pngbase "\\*[basename] .if '\\*[pngbase]'' .ds pngbase \\n(.B .ds pngfile \\*[pngbase]\\n+[png].png .html -
.\" The .inputpipe must be the last line of the macro! .inputpipe .TE troff2png >\\*[pngfile] .. .de TE .. .de PS .ds pngbase "\\*[basename] .if '\\*[pngbase]'' .ds pngbase \\n(.B .ds pngfile \\*[pngbase]\\n+[png].png .html -
.inputpipe .PE troff2png >\\*[pngfile] .. .de PE .. .de B1 .margin 0 .nr TW 10 .nr TW1 80 .if !'\\$1'' .nr TW \\$1 .if !'\\$2'' .nr TW1 \\$2 .html box \
\

\
\ \ | \ | \ | \ | \
\
\ \ | \ | \ | \ | \
.html box0
.html box1 |  | .. .de B2 .html box1 |  | .html box0
\ |  |  | \ | \
\
\ \ | \ | \ | \ | \
.html box .margin 1 ..