What does $1 stand for?

$1 stands for "ZX Spectrum file in HOBETA format"

How to abbreviate "ZX Spectrum file in HOBETA format"?

"ZX Spectrum file in HOBETA format" can be abbreviated as $1

What is the meaning of $1 abbreviation?

The meaning of $1 abbreviation is "ZX Spectrum file in HOBETA format"

What does $1 mean?

$1 as abbreviation means "ZX Spectrum file in HOBETA format"