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Calc FAQ

Reporting Problems

Q: How do I get units and conversion factors added to Calc?

A: You can edit the values stored by your own copy of Calc as described in the online documentation. You can help us improve the range of units covered by submitting units for inclusion in the units/properties database. You can do this by e-mail (contact details page) .

Q: How do I get physical constants or physical properties added to Calc?

A: You can edit the values stored by your own copy of Calc as described in the online documentation. You can help us improve the range of constants included by submitting constants and properties for inclusion in the units/properties database. You can do this by e-mail (contact details page) .

Q: How do I correct erroneous values for conversion factors or constants?

A: You can edit the values stored by your own copy of Calc as described in the online documentation. If you think that one of the values is in error, please help us by submitting an update. You can do this by e-mail (contact details page) .

Q: How do I report a bug in Calc?

A: See the bug report page. Alternatively, e-mail us (contact details page).

Q: How can I suggest an enhancement to Calc?

A: If you have suggestions for future enhancements, please either mention these on your registration form, or e-mail us (contact details page) with your ideas. We are very keen to hear user's suggestions. Even if the idea is not new to us, it helps us to know which proposed features are of most importance to users. A large number of the improvements to the last version were as a result of user suggestions.

Q: I emailed with a request for help; why didn't you reply?

A: We never intentionally ignore messages. Occasionally a message slips through the cracks no doubt, due to human error. But likely possibility is that you or your email hosting provider is using one of several email "Blacklists". These are run by anti-spam enthusiasts and sometimes they get carried away to the point of blocking entire ISPs. In one case BT Internet, one of the largest ISPs, was blacklisted affecting all their users. In our experience these spam vigilantes are unsympathetic to innocent users who are affected in this way, and there is a good description of the problem at http://www.paulgraham.com/spamhausblacklist.html. The usual scenario is that having written a reply we have the frustration of seeing our message rejected, and with no way of contacting the correspondent even to tell them that they are blocking our emails!

Q: Why did I get this weird email from you?

A: Because we have a prominent website our email address tends to get "harvested" for lists of addresses that spammers use to forge the 'from' address in their spam emails. Because of the way email works it is very easy for the sender of an email to put any arbitrary email address in the 'from' field. For example a spammer or virus writer might wish to make an email appear to come from a reputable company. Unfortunately there is nothing practical we or any other organization can do to prevent spammers forging our email addresses in this way.