I often see people posting examples of BBCode when trying to help somebody, but adding spaces and other stuff so that the text displays instead of doing whatever the BBCode is supposed to do.
Allow me to introduce you to the NOPARSE BBCode.
Inserting something between
[NOPARSE] and
[/NOPARSE] means that any BBCode within will not be processed.
So if you want to show someone, for example, how to use strikeout, then you could type
[NOPARSE]Just type [s]Blah blah[/s] to display[/NOPARSE] [s]Blah blah[/s].
This would display
Just type [s]Blah blah[/s] to display Blah blah. Using it to display [NOPARSE] and [/NOPARSE] gets a bit long winded