I just figured out that you don't have to type in entire commands - Only part. For example, the /clear command will be triggered if you just enter /cle. However, if the part entered is used in multiple commands, it won't work - For example, /cl will result in "Command not specific enough, did you mean "/clap /clear"?"
You also have to start from the beginning of a command - /ear won't activate the /clear command.
/do drugs
Dozes off