[Masmplus] the first time I used the message "external symbol _ start" is a configuration problem.

When you use masmplus for the first time, the start mark is used in codesg segment, and the end mark is: End start. However, the default masmplus will prompt that start is an unknown external symbol, as shown in figure

 

What should we do? It turns out that the connector is different. If a similar start tag is used here, we need to use the connector under DOS to link it, you can choose "configuration"> "System Configuration"> "compile/script" to select a single file and use the DOS mode by default,