This document discusses various assembly language directives and memory organization techniques used by assemblers. It outlines directives like DB, DW, DD that are used for storing data in memory segments. It also discusses label equating with EQU, changing the program origin with ORG, and indicating procedures with PROC and ENDP. The document describes memory models like TINY, SMALL and HUGE and using full segment definitions with segments like STACK_SEG, DAT_SEG, CODE_SEG. It provides an example program to demonstrate these concepts.