Here is a list of all related documentation pages:

Example Codes of Vector IO
Example Codes of Matrix IO
Example Codes of dgematrix LAPACK Functions
Example Codes of dgbmatrix LAPACK Functions
Example Codes of dsymatrix LAPACK Functions
Read/Write File Format
Typical "Makefile"s for a few Platforms
Mechanism of "Smart-Temporary" System
Illustration of Band Matrix