1, where & stands for a long integer, equivalent to:

Dim tl is as long, I is as long and J is as long.

2. & ampH68 stands for 16 radix, which is converted into 10 radix, which is 104, so it is equivalent to:

outData(0) = 104

3. Here &; Represents a string connector, just like a water pipe connector can connect two water pipes into a long water pipe. Symbols can also connect two strings into a long string, for example

American Broadcasting Corporation. " def" = "abcdef "