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Chapter 5: Functions in the Environment Menu

The PARIS Designer32 Reference Manual

What does a line terminator look like?

A very simple analogy is that of a typewriter…

Imagine that the PARIS Designer is a person typing onto an
old-fashioned typewriter.
As the person types, they will mainly press keys corresponding
to a hammer which delivers the image of a character onto the
paper. When they reach the end of the line they will need to
perform two functions (otherwise they will type off the edge of
the paper).

1. They will need to move the carriage of the typewriter so that

the next character is positioned at the start of a line (left
most position).

2. They will then need to feed the paper up one line so that the

next line starts on a new line at the left-most position.

This carriage-return and line-feed function is normally
conducted in one move with a mechanical lever.

…in the vast majority of cases, computer print data contains
corresponding carriage-return and line-feed functions.

Each line of printable bytes will normally be terminated by a carriage-return and
line-feed combination of bytes to emulate the simple typewriter function.

In most cases the print data will contain a pair of bytes representing the two actions,
however in some cases the carriage-return function is not required because the line-
feed function implies the return to the left of the page. In these cases each print line
will be terminated by a single line-feed byte.