Specific help page for shell built-in commands such as 'source'

Question

If you do any of the following on the command line

man source man readonly man suspend ... 

The conclusion is the same manpage that describes shell built-in commands in general.

I searched the "source" on the net and I found this more specific documentation:

Linux / Unix Command: source

NAME Command Library

source - evaluate a file or resource as a Tcl script
SYNTAX

source fileName source -rsrc resourceName? fileName?

source -rsrcid resourceId? fileName?

How can I output something like this in my terminal?

Answer 1

Try to do this in a shell:

 help source