Mark copy to indicate and correct errors in type, arrangement, grammar, punctuation, or spelling, using standard printers' marks.

“Mark copy to indicate and correct errors in type, arrangement, grammar, punctuation, or spelling, using standard printers' marks.” is a core task performed by Proofreaders and Copy Markers. Among the occupation's 11 rated tasks, workers place it 11th by importance (#1 most important). About 87% of workers say it is relevant to their job.

This is a single occupation-specific task statement from O*NET. The figures below describe how central the task is to the job and what independent studies measure about AI and this kind of work — not a prediction that the task will be automated.

Work activities this task rolls up to

O*NET groups concrete tasks into broader work activities shared across many occupations.

• Examine materials or documentation for accuracy or compliance. in Evaluating Information to Determine Compliance with Standards

AI exposure

The OpenAI / Eloundou “GPTs are GPTs” study rates this task E1. Direct exposure — a language model could plausibly cut the time to do this task by at least half.

Exposure measures whether a model could meaningfully speed the task up — it is an estimate of overlap with model capabilities, not a measure of whether the work will be done by software. The study's intermediate score (β) for this task is 1.00. Automation potential label: T3.

How AI is actually used on this kind of task

The Anthropic Economic Index observes how people actually use AI on tasks like this one across millions of real conversations.

• 0.029% share of AI-use records mapped to this task
• 41% of that use is work-related
• Most common interaction: task iteration
• Average autonomy of the AI: 3.0 (1–5; higher = more autonomous)
• 97% of interactions still needed a human in the loop

Observed AI use describes people choosing to use AI as a tool on this kind of task today. It is augmentation and assistance, not a measure of jobs replaced.

Working with AI vs. handing it off

Of the AI conversations mapped to this task, the split between people working alongside AI and people delegating the task to it.

How people interact with AI on this task

Other tasks in this occupation

• Read corrected copies or proofs to ensure that all corrections have been made. · importance 4.6
• Correct or record omissions, errors, or inconsistencies found. · importance 4.5
• Compare information or figures on one record against same data on other records, or with original copy, to detect errors. · importance 4.4
• Route proofs with marked corrections to authors, editors, typists, or typesetters for correction or reprinting. · importance 4.3
• Consult reference books or secure aid of readers to check references with rules of grammar and composition. · importance 4.3
• Typeset and measure dimensions, spacing, and positioning of page elements, such as copy and illustrations, to verify conformance to specifications, using printer's ruler or layout software. · importance 4.3
• Consult with authors and editors regarding manuscript changes and suggestions. · importance 4.0
• Archive documents, conduct research, and read copy, using the internet and various computer programs. · importance 3.9
• Write original content, such as headlines, cutlines, captions, and cover copy. · importance 3.6
• Read proof sheets aloud, calling out punctuation marks and spelling unusual words and proper names. · importance 3.3

See all tasks on the Proofreaders and Copy Markers page.

Sources for this page

Every figure above traces to a named public dataset and the exact release below — not hand-written opinion. See the full methodology for what each measure does and does not mean.

• O*NET 30.3 U.S. Department of Labor / National Center for O*NET Development
• Anthropic Economic Index v4 (2026-01-15) + v2 (2025-03-27) Anthropic
• “GPTs are GPTs” (Eloundou et al.) arXiv 2303.10130 OpenAI / academic

Data compiled June 2, 2026. Figures are estimates, not advice.

@misc{singulariki-task-5159,
  title  = {Mark copy to indicate and correct errors in type, arrangement, grammar, punctuation, or spelling, using standard printers' marks.},
  author = {{Singulariki}},
  year   = {2026},
  note   = {O*NET 30.3; Anthropic Economic Index v4 (2026-01-15) + v2 (2025-03-27); “GPTs are GPTs” (Eloundou et al.) arXiv 2303.10130. Accessed June 7, 2026},
  url    = {https://singulariki.com/tasks/task-5159}
}