---
title: "4K Toolkit"
id: 11623
type: "product"
slug: "4k-toolkit"
url: "http://localhost/product/4k-toolkit/"
markdown_url: "http://localhost/product/4k-toolkit.md"
published_at: "2019-11-30T01:26:17+00:00"
modified_at: "2026-03-22T13:36:35+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "A powerful editor for serious BASIC programmers. Offers 11 new facilities: ALTER (replace a string); BYTES (how much free memory); COPY (duplicates program lines); DELETE (deletes a block); FIND (find a string); HELP; INSERT (merge two programs); KEEP (keeps a block of lines by storing them above RAMTOP); MOVE (move lines within a program); RENUMBER;…"
category:
  - name: "Programming"
    slug: "programming"
    taxonomy: "category"
    url: "http://localhost/category/software/programming/"
post_tag:
  - name: "DK'Tronics"
    slug: "dktronics"
    taxonomy: "post_tag"
    url: "http://localhost/tag/dktronics/"
  - name: "Gladstone Electronics"
    slug: "gladstone-electronics"
    taxonomy: "post_tag"
    url: "http://localhost/tag/gladstone-electronics/"
  - name: "Kayde Electronic Systems Ltd."
    slug: "kayde-electronic-systems-ltd"
    taxonomy: "post_tag"
    url: "http://localhost/tag/kayde-electronic-systems-ltd/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
model:
  - name: "Timex/Sinclair 1000"
    slug: "ts-1000"
    taxonomy: "model"
    url: "http://localhost/model/ts-1000/"
genre:
  - name: "Programming"
    slug: "programming"
    taxonomy: "genre"
    url: "http://localhost/type/programming/"
  - name: "Software"
    slug: "software"
    taxonomy: "genre"
    url: "http://localhost/type/software/"
company:
  id: 11012
  title: "Kayde Electronic Systems Ltd."
  type: "company"
  url: "http://localhost/company/kayde-electronic-systems-ltd/"
price: 10.55
date: 1983
rarity: "Uncommon"
articles:
  - article:
      id: 24414
      title: "Programming Your Computer"
      type: "article"
      url: "http://localhost/article/programming-your-computer/"
adverts:
  - publication:
      - id: 26648
        title: "SYNC v3 n2"
        type: "issue"
        url: "http://localhost/issue/sync-v3-n2/"
    advert_page: "32"
companies_products:
  - id: 10819
    title: "DK’tronics"
    type: "company"
    url: "http://localhost/company/dktronics/"
  - id: 10902
    title: "Gladstone Electronics"
    type: "company"
    url: "http://localhost/company/gladstone-electronics/"
  - id: 11012
    title: "Kayde Electronic Systems Ltd."
    type: "company"
    url: "http://localhost/company/kayde-electronic-systems-ltd/"
---

# 4K Toolkit

A powerful editor for serious BASIC programmers. Offers 11 new facilities: ALTER (replace a string); BYTES (how much free memory); COPY (duplicates program lines); DELETE (deletes a block); FIND (find a string); HELP; INSERT (merge two programs); KEEP (keeps a block of lines by storing them above RAMTOP); MOVE (move lines within a program); RENUMBER; VERIFY.

Requires Kayde [4K Graphics ROM](http://localhost/product/4k-graphics-rom/) option.