I call it thus, for SmashLib:
check_version("SmashLib", "smashlib", "1.2", 3065);
This indicates that somewhere in the first post of thread 3065 (http://kolmafia.us/showthread.php?3065), the text <b>SmashLib 1.2</b> appears -- "SmashLib" is the name of my software (hence "soft", I think), and...