BBS:      TELESC.NET.BR
Assunto:  src/conio/cterm.adoc
De:       Deuc¨
Data:     Thu, 19 Mar 2026 01:34:49 -0700
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https://gitlab.synchro.net/main/sbbs/-/commit/9cd6e7c3539a73c80ec053e6
Modified Files:
	src/conio/cterm.adoc
Log Message:
Document Prestel and BBC Micro Mode 7 emulation in cterm.adoc

Comprehensive documentation of both Videotex display modes: serial
attributes (before/after effect classification), alphanumeric vs
mosaic character sets, hold mosaics, double height, concealed display,
contiguous/separated mosaics, C0 control characters for both Prestel
(wrapping cursor) and BEEB (scrolling cursor), ESC sequences, Prestel
remote programming protocol, BEEB VDU 23 and APS sequences, character
translation (#/_/` swap), and bitmap rendering details.

Control character names and behavior verified against the Prestel
Terminal Specification (Edition One, Jan 1981).

Co-Authored-By: Claude Opus 4.6 (1M context) 
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