Specific man page for shell built-in commands like 'source' [duplicate]

Question

This question already has answers here:

Where to view man pages for Bash builtin commands? (4 answers)

Closed 10 months ago.

If you execute any of the following in the command line

man source 
man readonly
man suspend
...

The output is the same manpage describing shell built-in commands in general.

I've searched for 'source' on line and I've found this more specific documentation:

Linux / Unix Command: source

Command Library NAME

source - Evaluate a file or resource as a Tcl script
SYNOPSIS

source fileName source -rsrc resourceName ?fileName?

source -rsrcid resourceId ?fileName?

How can I output something similar in my terminal?

Answer 1

Try doing this in a shell :

help source