Each SCS game has console. To enable it you need to navigate to your config.cfg file and set both g_console and g_developer config variables to 1. You can access the console using ~ key by default.
Shortcuts that you can use while using console
Ctrl + Shift- Change mode of displaying messages - errors and warnings, all.PageUp and PageDown- Scroll up / down content of the console.Shift + PageUp or PageDownScroll fast up / down content of the console.Ctrl + PageUp or PageDownScroll slow up / down content of the console.