Itemtype 	Content
0 	Text file
1 	Directory
2 	CSO name server
3 	Error
4 	Mac HQX filer
5 	PC binary
6 	UNIX uuencoded file
7 	Search server
8 	Telnet Session
9 	Binary File
c 	Calendar (not in 2.06)
e 	Event (not in 2.06)
g 	GIF image
h 	HTML, Hypertext Markup Language
i 	“inline” text type
s 	Sound
I 	Image (other than GIF)
M 	MIME multipart/mixed message
T 	TN3270 Session/ 

https://sdfeu.org/w/tutorials:gopher#creating_your_gopherspace