Structure of a script file
A script is a text file containing thinBasic code.
Inside a script all the code not included into a user defined function is considered main code and executed when script is executed.
All the lines not included into a user defined function is considered Main Code.
Default main function
thinBasic also implements a main function logic. If script contains a function called TBMain and during the script execution TBMain was not called by direct invocation, thinBasic will execute TBMain automatically.
TBMain is like the "main" function in C programming language.