standard:tldr:944e0

The command "standard ${filename1 filename2 ---}" seems to be an example of using command line arguments in an Unix-like system.

In this command, "standard" refers to the name of a command or script that expects certain arguments. The "$" symbol is used to denote a parameter or variable in the command line.

The syntax "${filename1 filename2 ---}" suggests that the command requires two filenames as arguments. The "---" at the end of the syntax indicates that there can be more filenames or options following in the command.

To use this command, you would replace "filename1" and "filename2" with the actual names of the files you want to use as arguments. For example, if you have two files named "file1.txt" and "file2.txt", you would run the command as "standard file1.txt file2.txt".