---
title: "QL: Substitution"
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published_at: "2026-03-11T20:35:53+00:00"
modified_at: "2026-03-11T20:35:53+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Here's a little utility that will definitely come in handy someday. Let's say you have a program that references `mdv1` and you want to reference `flp1` instead. You could load the program and manually change all the `mdv1`s to `fIp1`s, but that's a long and tedious process. This program will do that operation quickly for…"
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  - name: "Timex/Sinclair 2068"
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issue: "16"
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    title: "SIN n16 Jun-Jul 1987"
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pages: "16-18"
pubdate: "June-July 1987"
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---

# QL: Substitution

Here’s a little utility that will definitely come in handy someday. Let’s say you have a program that references `mdv1` and you want to reference `flp1` instead. You could load the program and manually change all the `mdv1`s to `fIp1`s, but that’s a long and tedious process. This program will do that operation quickly for you.