---
title: "More AERCO RP/M Utilities: SUBREN"
type: "article"
slug: "more-aerco-rp-m-utilities-subren"
url: "http://localhost/article/more-aerco-rp-m-utilities-subren/"
markdown_url: "http://localhost/article/more-aerco-rp-m-utilities-subren.md"
published_at: "2025-07-24T21:32:25+00:00"
modified_at: "2025-07-24T21:32:26+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Have you even wondered how other computer owners get their machines to do something when they do not have BASIC in the ROM like the Sinclair and Timex does. Where do you put the command line? The answer is by using a utility like SUBREN. All this does is chain a number of programs or…"
category:
  - name: "The Data Expansion"
    slug: "the-data-expansion"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/the-data-expansion/"
post_tag:
  - name: "AERCO"
    slug: "aerco"
    taxonomy: "post_tag"
    url: "http://localhost/tag/aerco/"
  - name: "CP/M"
    slug: "cp-m"
    taxonomy: "post_tag"
    url: "http://localhost/tag/cp-m/"
  - name: "TS 2068"
    slug: "ts2068"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts2068/"
model:
  - name: "Timex/Sinclair 2068"
    slug: "ts-2068"
    taxonomy: "model"
    url: "http://localhost/model/ts-2068/"
indiv:
  - name: "David Baulch"
    slug: "david-baulch"
    taxonomy: "indiv"
    url: "http://localhost/indiv/david-baulch/"
publication_r:
  id: 50143
  title: "The Data Expansion"
  type: "periodical"
  url: "http://localhost/periodical/the-data-expansion/"
authors_r:
  - name: "David Baulch"
    slug: "david-baulch"
    taxonomy: "indiv"
    url: "http://localhost/indiv/david-baulch/"
volume: "5"
issue: "2"
issues_articles:
  - id: 50244
    title: "The Data Expansion v5 n2"
    type: "issue"
    url: "http://localhost/issue/the-data-expansion-v5-n2/"
pages: "11-12"
pubdate: "February 1988"
archive_link: false
---

# More AERCO RP/M Utilities: SUBREN

Have you even wondered how other computer owners get their machines to do something when they do not have BASIC in the ROM like the Sinclair and Timex does. Where do you put the command line? The answer is by using a utility like SUBREN. All this does is chain a number of programs or procedures together, sometimes called ‘batch’, and when you type that procedure, all of the commands are acted upon. Very similar to our command line mode.