[Gimp-user] Editing/replacing text on .xcf image

[Rich Shepard <rshepard appl-ecosys com>]

Running gimp-2.8.18 on Slackware-14.2.

I have a single-layer image (in .xcf format) and I want to change some of
the text on the image while maintaining the same type face and font.

I tried selecting a text string using the rectangle selector then clicked on
the selected text with the Text tool selected. No joy there.

Please point me to the proper way of editing and replacing text strings in
this GIMP version.

Regards,

Rich