Editing Liberty BASIC (section)

==Alternative implementations==
The GNU/Liberty Basic Compiler Collection (GLBCC), by Anthony Liguori, is a set of tools to compile Liberty Basic programs, runs on Windows and Linux systems, but the project has not been updated since 2001.

In 2012 an alternative [[Microsoft Windows|Windows]] implementation of Liberty BASIC, '''LB Booster''' (LBB), became available.  Although substantially compatible with the Liberty BASIC 4 language syntax, LBB was developed entirely independently by [[Richard T. Russell|Richard Russell]] and is written in [[BBC BASIC]].

LBB offers (typically) increased execution speed, smaller self-contained executables and some additional capabilities.  However LBB is not 100% compatible with LB4 and while many programs will run without modification, some may need to be adapted, or may even be unsuitable for running under LBB.

Liberty Basic does not provide for data declarations. Instead any new data name is treated as a new declaration. Some regard this as a benefit, others see it as a debugging issue for imperfect typers. In 2019 Peter J. D. Matthews devised a method for adding declarations and checking for undeclared data - without changing the code seen by the LB interpreter. In 2023 this system was ported to GitHub in public repository "LBPrePass" for anyone to use. This repository also contains program documentation. The program is written in Liberty Basic 4.5.1 and is intended to analyse 4.5.1 code.