Actually, I use the tilde ('~') within the model designation only for ships or mobile weapons with multiple model numbers, such as White Base, to deliminate other designation from showing onto the Infobox title while still appearing within the model number cell. I do it so new users, when reading the Infobox title aren't overwhelmed with the complex model designation separated by a slash ('/'): it also avoids confusion when comparing to another ship/mobile weapon with a model designation that actually contains a '/'. It's mostly a cosmetic coding trick, and, as far as I am aware, doesn't interfere with any queries.
I'm not sure if this practice is interuptive or if this is something generally not allowed, but if you (admins) suggest, i'll avoid doing so in the future. I thought it would help visually with reading the Infobox titles of ships/weapons with multiple designation. Sry.
I don't have an opinion either way of displaying all of the model numbers or a single one. I just coded it that way. If you want you could ask others their opinions on a forum and it can either be changed or remain the same. The problem with putting the tilde in front is that it prevents the template from storing the designation in the database for queries. Also don't worry about having to find the places that were changed, Property:Has_improper_value_for tells me where the format of data is wrong.
Ok then. I put up a forum topic about it and see what the consensus is. I had a feeling it would omit the information from being stored, but I didn't know how big of a problem it would be for other queries. Again, sry. I was just trying to help clean up the look of the infobox title: nothing more. You can find the forum topic here.
I was poking around, and I noticed while searching for characters that the "Character" category doesn't utilize a property for the Birth Date, even though a "Birth date" property was made. Is there a specific reason for it, or has it not been noticed before now?