xman:tldr:bd5f9

The command "xman -helpfile ${filename}" is an instruction used in a Unix/Linux terminal.

Here's an explanation of each component:

• "xman" is a Unix command that opens the X Window System manual viewer. The X Window System is a graphical user interface used in Unix-like operating systems.
• "-helpfile" is an option or flag that tells the "xman" command to display the help file.
• "${filename}" is a placeholder for a specific file name or path. The user needs to replace "${filename}" with the actual name of the file they want to view the help information for.

So, when you execute the "xman -helpfile ${filename}" command, it will open the X Window System manual viewer and display the help information for the specified file.