Either Or: {a | b} means you can use either a or b

Required: <abc> means you must specify this parameter

Optional: [abc] means you can specify this parameter

Many: [abc]... means you can use multiple parameters, use quotes to make multiple words count as one

Aditionally, converters are used to make the bot fool-proof, this means in for example a member parameter, you can mention the user, their name, their name#discriminator, nickname or id