Explanation:

This is the VRML 2.0 header. It is required in all VRML files, to distinguish it from other files. If the browser does not see this header, then the browser will likely complain. Note: depending on which version of Community Place you are using, you might have to add a Draft number to the header, like the following:

#VRML Draft #3 V2.0 utf8

However, if you don't include the draft number, the browser will simply give a warning message, and there is no need for worry.