---
title: "QL Hacker’s Journal 28"
id: 61564
type: "issue"
slug: "ql-hackers-journal-28"
url: "http://localhost/issue/ql-hackers-journal-28/"
markdown_url: "http://localhost/issue/ql-hackers-journal-28.md"
published_at: "2025-11-18T13:19:08+00:00"
modified_at: "2025-12-18T20:39:43+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: "28"
issue_date: "July 1998"
issues_articles:
  - id: 61819
    title: "Editor’s Forum"
    type: "article"
    url: "http://localhost/article/editors-forum-27/"
  - id: 61820
    title: "Structured SuperBasic 2.6"
    type: "article"
    url: "http://localhost/article/structured-superbasic-2-6/"
  - id: 61821
    title: "Revision Control System (RCS)"
    type: "article"
    url: "http://localhost/article/revision-control-system-rcs/"
  - id: 61822
    title: "Environment Variables"
    type: "article"
    url: "http://localhost/article/environment-variables/"
  - id: 61823
    title: "Working Directory"
    type: "article"
    url: "http://localhost/article/working-directory/"
  - id: 61824
    title: "Case Statement Implementation"
    type: "article"
    url: "http://localhost/article/case-statement-implementation/"
  - id: 61825
    title: "Creating Loadable Extensions Using Qlib"
    type: "article"
    url: "http://localhost/article/creating-loadable-extensions-using-qlib/"
archiveurl: "https://archive.org/download/ql-hackers-journal/QL%20Hacker%27s%20Journal%2028.txt"
---

# QL Hacker’s Journal 28