Apologies for asking a dumb question - I am a total newbie and have a question about reading documentation.
In the man page for the command ps2pdf the synopsis is:
ps2pdf [options...] {input.[e]ps|-} [output.pdf|-]
ps2pdf12 [options...] {input.[e]ps|-} [output.pdf|-]
ps2pdf13 [options...] {input.[e]ps|-} [output.pdf|-]
I don't understand the details of {input.[e]ps|-}
Specifically what does the "e" represent?
TIA for your help.