Use !commands or !comandos to show the list of commands.
This plugin creates a menu with all registered commands and shows it to the client. After the player selects one of the commands, it will show another menu with the respective description and an option to run that command.
comandos.smx -> addons/sourcemod/plugins
ServerCommands.cfg -> addons/sourcemod/configs
ServerCommands.phrases.txt -> addons/sourcemod/translations
Nothing (yet)