It's a text with *.ini file extension. You make it yourself with those lines where after the = sign, 0 is false (off) and 1 is true (on). If you're not sure how to set yours, you can install NTR Launcher v2.2 converted in *.cia from this
starter kit. Go in the
nds folder and open the
NTR_Launcher.ini with a text editor. Just know that you can't use this file between difference versions of NTR Launcher as there were main & alternate builds and certain options removed in newer versions.