--- key: mechanic/keyboard--family-text-rules type: mechanic id: keyboard--family-text-rules lang: en title: Text restrictions and transformations summary: >- Entered text must satisfy constraints such as allowed words, command syntax, a transformation or the meaning of a response. updatedAt: '2026-10-22' status: active url: 'https://gamemechanics.pro/en/knowledge/mechanic/keyboard--family-text-rules/' jsonUrl: >- https://gamemechanics.pro/api/v1/knowledge/en/mechanic/keyboard--family-text-rules.json markdownUrl: >- https://gamemechanics.pro/content/knowledge/en/mechanic/keyboard--family-text-rules.md aliases: - Text constraints and rules tags: - Physical keyboard interactions - Rule sourceIds: - source-839dfd6aadadd7e9 sources: - id: source-839dfd6aadadd7e9 title: Hacknet url: 'https://store.steampowered.com/app/365450/' verifiedAt: null relations: [] placements: - catalogId: keyboard id: family-text-rules title: Physical keyboard interactions url: 'https://gamemechanics.pro/en/mechanics/keyboard/#family-text-rules' categoryIds: - section-6 supersededBy: [] attributes: preview: updatedAt: '2026-10-22' title: Text constraints and rules description: >- Entered text must satisfy constraints such as allowed words, command syntax, a transformation or the meaning of a response. image: src: images/mechanics/interface-hacknet-00.webp width: 1440 height: 809 game: Hacknet sourceUrl: 'https://store.steampowered.com/app/365450/' originalUrl: >- https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/365450/ss_182ebf5aa570fc0ad0d1d974d43137e858ddeb54.1920x1080.jpg?t=1758156718 credit: Team Fractal Alligator / Fellow Traveller rights: >- © Team Fractal Alligator / Fellow Traveller. All rights reserved. Excluded from MIT and CC BY 4.0. caption: 'Hacknet: a quick command reference beside the terminal' alt: 'Hacknet: a quick command reference beside the terminal' markers: - x: 7 'y': 31 label: Quick Reference Guide explains the commands tips: - Explain the violated rule and preserve the text for correction. examples: - title: Hacknet url: 'https://store.steampowered.com/app/365450/' endsAt: null provenance: >- Original editorial design catalog consolidated from project discussions on 2026-10-20. Complete discussion item lists and contextual limitations are preserved; linked primary sources support specific techniques, not the entire classification. English translation was prepared with machine assistance and editorial review. license: CC-BY-4.0 codeLicense: MIT attribution: gamemechanics.pro contributors catalogKey: catalog/keyboard --- # Text restrictions and transformations id: keyboard--family-text-rules type: mechanic key: mechanic/keyboard--family-text-rules lang: en status: active url: https://gamemechanics.pro/en/knowledge/mechanic/keyboard--family-text-rules/ Entered text must satisfy constraints such as allowed words, command syntax, a transformation or the meaning of a response. ## At a glance ![Hacknet: a quick command reference beside the terminal](https://gamemechanics.pro/images/mechanics/interface-hacknet-00.webp) [Hacknet](https://store.steampowered.com/app/365450/) · © Team Fractal Alligator / Fellow Traveller. All rights reserved. Excluded from MIT and CC BY 4.0. 1. Quick Reference Guide explains the commands - Explain the violated rule and preserve the text for correction. - [Hacknet](https://store.steampowered.com/app/365450/) ## How it works Additional requirements and consequences are specified above the text input. ## Variants ### Variants and applications - Permitted or prohibited alphabet. Action: Use only certain symbols or avoid specified ones. Application: Lipogram, damaged terminal, spells from available runes. Conditions: The final text or each event is checked; these are different conditions. Equipment: Regular keyboard. - Word formation according to the rule. Action: Create words of the desired length, category, ending or structure. Application: Word battle, educational quiz, selection of a recipe based on the properties of a word. Conditions: A dictionary or clear, testable grammar is needed. Equipment: A regular keyboard. - String conversion. Action: Reverse typing, encrypt, replace or rearrange characters. Applications: Decryption, mirror messages, logic puzzles. Conditions: For international text, consider compound characters and graphemes. Equipment: Regular keyboard. - Case and punctuation as meaning. Action: Different forms of notation indicate different actions or quality of the result. Application: Increasing the power of a spell with case, syntactic tasks, precise command entry. Conditions: The rule must retain meaning in supported languages. Equipment: A regular keyboard. - Time limit for text. Action: Complete a word, phrase or message before the deadline. Application: Save a character by typing a command, high-speed correspondence, emergency protocol. Conditions: The length and language of the text must be taken into account when setting the time. Equipment: A regular keyboard. - Consequences of typos. Action: An error changes the world: it causes damage, creates interference or distorts the command. Application: Unstable spells, a noisy communication channel, operator simulation. Conditions: The tolerance for errors and the possibility of correction are set explicitly. Equipment: A regular keyboard. - Correction as a resource. Action: Backspace, replacement and cancellation are limited, paid or provide a separate benefit. Application: Editing puzzle, restoration of damaged text, proofreader fight. Conditions: Do not mix the price of correction with the requirements for the input method. Equipment: Regular keyboard. - Ambiguity and autocompletion. Action: Select from multiple completions, expand a shortcut, or accept a hint. Application: Command palette, word prediction, minimum number of characters game. Conditions: Hints must be accessible from the keyboard and show the selected option. Equipment: Regular keyboard. ## Context and limits Author's working classification for designing games and interactions. Options can overlap and combine; the list is not a generally accepted standard or proven exhaustive list. Application examples are conditional unless a specific verifiable observation is indicated nearby. Sources support individual techniques and technical limitations. ## Connected materials ## Sources and provenance Original editorial design catalog consolidated from project discussions on 2026-10-20. Complete discussion item lists and contextual limitations are preserved; linked primary sources support specific techniques, not the entire classification. English translation was prepared with machine assistance and editorial review. - [Hacknet](https://store.steampowered.com/app/365450/) (id: source-839dfd6aadadd7e9) CC-BY-4.0 · gamemechanics.pro contributors