---
title: "QL Hacker’s Journal 21"
id: 61557
type: "issue"
slug: "ql-hackers-journal-21"
url: "http://localhost/issue/ql-hackers-journal-21/"
markdown_url: "http://localhost/issue/ql-hackers-journal-21.md"
published_at: "2025-11-18T13:14:29+00:00"
modified_at: "2025-11-20T00:12:59+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2025/10/Sinclair_QL_Top_cutout-scaled.png"
category:
  - name: "QL Hacker's Journal"
    slug: "ql-hackers-journal"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/ql-hackers-journal/"
periodical_issues:
  - id: 33686
    title: "QL Hacker’s Journal"
    type: "periodical"
    url: "http://localhost/periodical/ql-hackers-journal/"
number: "21"
issue_date: "June 1995"
issues_articles:
  - id: 61780
    title: "Editor’s Forum"
    type: "article"
    url: "http://localhost/article/editors-forum-20/"
  - id: 61781
    title: "QHJ Freeware Awards"
    type: "article"
    url: "http://localhost/article/qhj-freeware-awards-2/"
  - id: 61782
    title: "QDOS Filters"
    type: "article"
    url: "http://localhost/article/qdos-filters/"
  - id: 61783
    title: "JOYFU Or Find The Missing Construct"
    type: "article"
    url: "http://localhost/article/joyfu-or-find-the-missing-construct/"
  - id: 61784
    title: "Language Design Principles"
    type: "article"
    url: "http://localhost/article/language-design-principles/"
archiveurl: "https://archive.org/download/ql-hackers-journal/QL%20Hacker%27s%20Journal%2021.txt"
---

# QL Hacker’s Journal 21