Copy use ed commands

Syntax

:[range]co[py] {address} :co* :copy*
Copy the lines given by [range] to below the line
given by {address}}.

:t :t* - Synonym for copy

:<line number>t. - copies the line number
specified and pastes it to the line below.

Examples

:281t. – Copy line 281 and paste it below the
current line.

:-10t. – Copy the line 10 lines above the
current line and paste it below the current line.

:+8t. – Copy the line 8 lines after the current
line and paste it below.

:10,20t. – Copy lines 10 to 20 and paste them
below.

:t20 – Copy the current line and paste it below
line 20.