---
title: "QL Substitution"
type: "article"
slug: "ql-substitution"
url: "http://localhost/article/ql-substitution/"
markdown_url: "http://localhost/article/ql-substitution.md"
published_at: "2026-03-10T13:46:23+00:00"
modified_at: "2026-03-10T13:46:24+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Here's a program with a very useful function that can save you several minutes of hard work. It takes any file (BASIC, text, etc.) and searches for an item we specify, replacing it with another."
category:
  - name: "SIN"
    slug: "sin"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/sin/"
post_tag:
  - name: "QL"
    slug: "ql"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ql/"
  - name: "Type-in program"
    slug: "type-in-program"
    taxonomy: "post_tag"
    url: "http://localhost/tag/type-in-program/"
model:
  - name: "Sinclair QL"
    slug: "sinclair-ql"
    taxonomy: "model"
    url: "http://localhost/model/sinclair-ql/"
indiv:
  - name: "Real Gagnon"
    slug: "real-gagnon"
    taxonomy: "indiv"
    url: "http://localhost/indiv/real-gagnon/"
publication_r:
  id: 52924
  title: "SIN"
  type: "periodical"
  url: "http://localhost/periodical/sin/"
authors_r:
  - name: "Real Gagnon"
    slug: "real-gagnon"
    taxonomy: "indiv"
    url: "http://localhost/indiv/real-gagnon/"
issue: "13"
issues_articles:
  - id: 52947
    title: "SIN n13 Dec-Jan 1986"
    type: "issue"
    url: "http://localhost/issue/sin-n13-dec-jan-1986/"
pages: "14-16"
pubdate: "December 1986 - January 1987"
archive_link: false
---

# QL Substitution

Here’s a program with a very useful function that can save you several minutes of hard work. It takes any file (BASIC, text, etc.) and searches for an item we specify, replacing it with another.