What is Pre-processor and how it works ?
What are conditional compilation directives ?
What are #define and #undef directives ?
What are #error and #stdout directives ?
What are #xcommand and #xtranslate directives ?
What are #command and #translate directives ?
What is a RTE (Runtime error) ?
What is variable and field name length limit in Harbour ?
What is PICTURE function and template ?
What a preprocessor is, how will operate, what benefits it will offer ?
What are xBase File Types and Extensions ?
What are array and string size limits in Harbour ?
What is UI ( User Interface ) ?
What are file size limits in Harbour ?