jit.gl.text keep the text displayed

Depends on what you want to achieve.

If you provided an example patch we would have a better idea of what you mean and want.

If you want the previous text to still be editable, moveable, etc. then it need its own, independent [jit.gl.text]. If you deal with 2, maybe 3 iterations of text, maybe you can handle that all by yourself using 2 or 3 [jit.gl.text]. If you want more history, check [jit.gl.textmult];

If you want the previous text to still be on screen as ghost texture, search for the pass.smear example patcher.

And what might be the most simple approach: if you want your new text to be following the previous one, why not using the same [jit.gl.text] but just concatenate your previous text with the new one.