tempCodeRunnerFile.pp?

I was looking at some old Pascal programs, and tried to run a program I named put1.pp within VS Code (vscodium). But I got some error referencing tempCodeRunnerFile.pp (which vscodium apparently created). The program compiled/ran fine using fpc on the command line. I realized the Pascal source started with Program Record1; changed it to Program put1; Then it ran fine in vscodium.