The document discusses analyzing the source code of Microsoft Word 1.1a from 1990 using the PVS-Studio static analyzer. Some key findings include: 1. An infinite loop was found in a function due to an unsigned variable being decreased indefinitely. 2. A typo led to an array overrun by accessing beyond the bounds of a 5 element array. 3. Several instances of undefined behavior were discovered where variables were modified between uses. 4. Other issues included uninitialized variables, incorrect format strings in printf, and logical errors in conditions. Despite the age of the code, the analysis revealed several bugs, demonstrating static analysis remains useful on older code bases.