---
title: "ZX81 Screen Clear"
type: "article"
slug: "zx81-screen-clear-2"
url: "http://localhost/article/zx81-screen-clear-2/"
markdown_url: "http://localhost/article/zx81-screen-clear-2.md"
published_at: "2026-01-19T20:38:54+00:00"
modified_at: "2026-01-19T20:40:52+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Here's a nice touch for a program. It allows erasing \"bottom lines\" rather than all as in CLS."
category:
  - name: "CATS Newsletter"
    slug: "cats-newsletter"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/cats-newsletter/"
post_tag:
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
  - name: "Type-in program"
    slug: "type-in-program"
    taxonomy: "post_tag"
    url: "http://localhost/tag/type-in-program/"
model:
  - name: "Timex/Sinclair 1000"
    slug: "ts-1000"
    taxonomy: "model"
    url: "http://localhost/model/ts-1000/"
indiv:
  - name: "John Thomas"
    slug: "john-thomas"
    taxonomy: "indiv"
    url: "http://localhost/indiv/john-thomas/"
publication_r:
  id: 35941
  title: "CATS Newsletter"
  type: "periodical"
  url: "http://localhost/periodical/cats-newsletter/"
authors_r:
  - name: "John Thomas"
    slug: "john-thomas"
    taxonomy: "indiv"
    url: "http://localhost/indiv/john-thomas/"
volume: "6"
issue: "9-10"
issues_articles:
  - id: 38885
    title: "CATS v6 n9/10"
    type: "issue"
    url: "http://localhost/issue/cats-v6-n9-10/"
pages: "8"
pubdate: "February/March 1989"
archive_link: false
---

# ZX81 Screen Clear

Here’s a nice touch for a program. It allows erasing “bottom lines” rather than all as in CLS.