"MyChat Client (Windows)", "Console commands (under construction)", "Internal commands", "AppDir".
Open the folder with the program in Windows Explorer.
Usually, the application is installed to the folder with Windows user profile to allow automatic updates avoiding UAC elevated privileges. However, the administrator can install MyChat Client in Program Files (on a terminal server or via GPO in a domain), or in any other folder.
AppDir
Windows Explorer opens a folder with selected mcclient.exe file.