A text that explains an issue, a theory, a concept or plan is called what?

Synonyms for proposal
noun suggestion, presentation for action
bid
idea
motion
offer
outline
overture
plan
program
project
proposition
recommendation
scheme
angle
design
feeler
layout
pass
picture
pitch
proffer
scenario
setup
tender
terms
big idea
brain child
game plan

Synonyms for prospectus
noun details, outline of event
catalogue
syllabus
announcement
conspectus
design
list
plan
program
scheme
synopsis

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