[address1
][,
address2
]g
Paste the contents of the hold space (see h or H command) back into the pattern space, wiping out the previous contents of the pattern space. The example shows a simple way to copy lines.
This script collects all lines containing the word Item:
and copies them to a place marker later in the file.
The place marker is overwritten.
/Item:/H /<Replace this line with the item list>/g