I also use the notation as a convention to indicate that I'm referring to a Unix command (or library function, etc.). E.g., "cat" might refer to a feline, but "cat(1)" should more clearly refer to the Unix / Linux command.
(Where I've got proper markup, I'll typically set commands or references in monospace using backtick notation: `dd`, `cat`, etc.
I also use the notation as a convention to indicate that I'm referring to a Unix command (or library function, etc.). E.g., "cat" might refer to a feline, but "cat(1)" should more clearly refer to the Unix / Linux command.
(Where I've got proper markup, I'll typically set commands or references in monospace using backtick notation: `dd`, `cat`, etc.