另外一个 Powerbasic 的ide,大名鼎鼎的sed改良版本,些ide很好的参考-Another Powerbasic ide, well-known sed improved version, some ide very good reference

sed-4.2-1-src的源代码，含（sed.c，regex.c）-sed-4.2-1-src soucecode （sed.c，regex.c）

sed is a stream editor. A stream editor is used to perform basic text transformations on an input stream (a file or input from a pipeline). While in some ways similar to an editor which permits scr ipted edits (such as ed), sed works by making on