dtl stands for diff template library.

dtl is written by C++, the name of template is derived C++'s Template.

I mean dtl can compare two sequences have arbitrary type, however sequence must support random access iterator.

Additionally, dtl has following features.

• diff3
• dtl merges three sequences.
• when confliction occurred, dtl detects confliction, but does not specify the point of confliction.
• diff with Unified Format
• dtl also can treat a difference as Unified Format
• patch
• dtl patches a sequence with a SES (or a difference as Unified Format).