---
title: "QL_DOC n13"
id: 76730
type: "issue"
slug: "ql_doc-n13"
url: "http://localhost/issue/ql_doc-n13/"
markdown_url: "http://localhost/issue/ql_doc-n13.md"
published_at: "2026-11-11T11:08:08+00:00"
modified_at: "2026-11-11T11:08:08+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2026/11/qldoc-n13-cover.jpg"
  alt: "QL_DOC n13 cover"
periodical_issues:
  - id: 52925
    title: "QL_DOC"
    type: "periodical"
    url: "http://localhost/periodical/ql_doc/"
number: "13"
issue_date: "December 1989-January 1990"
issues_articles:
  - id: 76834
    title: "Sinclair News"
    type: "article"
    url: "http://localhost/article/sinclair-news-32/"
  - id: 76835
    title: "A New FORMAT"
    type: "article"
    url: "http://localhost/article/a-new-format/"
  - id: 76836
    title: "Programming Languages"
    type: "article"
    url: "http://localhost/article/programming-languages/"
  - id: 76837
    title: "Abacus Applications: Adding Times and Printer Codes"
    type: "article"
    url: "http://localhost/article/abacus-applications-adding-times-and-printer-codes/"
  - id: 76838
    title: "ACT Special Edition (Review)"
    type: "article"
    url: "http://localhost/article/act-special-edition-review/"
  - id: 76839
    title: "Renaming a Floppy Disk"
    type: "article"
    url: "http://localhost/article/renaming-a-floppy-disk/"
archiveurl: "https://archive.org/details/ql-doc/QL_DOC-13-1990.pdf"
---

# QL_DOC n13