Borland C++ 3.1 was the epitome of documentation. The retail packaging was about the width of 7 pieces of big box software and it weighed quite a bit more from the "encyclopedia set" it included. The assembler quick reference guide for TASM was better in 3.1 than in either 4 or 5. It was also spiral bound with a white comb. Although updated with features, 4 and 5 reduced the amount of documentation significantly.