macptopbm, pbmtoxbm: edit pages; mdatopbm, mgrtopbm, pbmtomacp, pbmtomda, pbmtomgr, pbmtonokia: add pages (#12225)

pages/common/macptopbm.md

@@ -1,19 +1,20 @@
 # macptopbm
 
 > Read a MacPaint file as input and produce a PBM image as output.
+> See also: `pbmtomacp`.
 > More information: <https://netpbm.sourceforge.net/doc/macptopbm.html>.
 
 - Convert a MacPaint file into a PGM image:
 
-`macptopbm {{path/to/file.mac}}`
+`macptopbm {{path/to/file.macp}} > {{path/to/output.pbm}}`
 
 - Skip over a specified number of bytes when reading the file:
 
-`macptopbm -extraskip {{N}}`
+`macptopbm -extraskip {{N}} > {{path/to/output.pbm}}`
 
 - Suppress all informational messages:
 
-`macptopbm -quiet`
+`macptopbm -quiet > {{path/to/output.pbm}}`
 
 - Display version: