No, you can have as many as the memory of your unit or sd card can will hold. The pois must all be in the same folder and then when they load they will show up as the different pois in your extras folder.
If you are refering to pois you will find this helpful:
You can either make a folder of POI's and load them all at the same time (every time) or after you load each file rename it. Each time you use POI loader it will list it as POI.gpi. If you do not change the name, it will overwrite what ever was there the next you load files.
If by topic you mean poi
No, you can have as many as the memory of your unit or sd card can will hold. The pois must all be in the same folder and then when they load they will show up as the different pois in your extras folder.
If you are refering to pois you will find this helpful:
http://www.poi-factory.com/node/85
It is terrible to speak well and be wrong. -Sophocles snɥɔnıɥdoɐ aka ʎɹɐƃ
rename it
You can either make a folder of POI's and load them all at the same time (every time) or after you load each file rename it. Each time you use POI loader it will list it as POI.gpi. If you do not change the name, it will overwrite what ever was there the next you load files.