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One of users asks for a calculator, which can compute tank volume given its length, diameter and walls depth. Here it is.
Since it is quite simple, I decided to use it as example and eventually write
Step-by-step guide: How to create online calculator
cause this site is GUI and engine for online calculators, that is - calculators authoring tool.
Go to "My calculators" page and choose "Create new..." -> "Calculator". This will open calculator editor.
First, fill "Name" and "Description" fields. Description is used in lists.
Repeat the same for the "diameter" parameter
And for the "depth" parameter
Now we should add simple output parameters. In our case these are used volume, total volume and walls volume. Press the button with "out" mark. This will open parameter editor dialog.
Fill dialog for the "used" parameter like on the picture below.
Repeat the same for the "walls" parameter
And for the "total" parameter
Now you can fill in some tags for better classification and press "Preview" button
On preview page you can check how it is working and return to editing or decide to publish it. If later, press "Publish" button
After publishing, calculator receives unique URL.
Now, each calculator, like this one, needs couple of words for other visitors like why it is done and how to use it, etc. This is done with article. Note that it is not a calculators, it is articles, which are listed on site. So, choose "Create new..." -> "Article" and this will open article editor.
In article editor, write couple of words about calculator, and press first toolbar button to insert calculator into article
Locate and choose your newly created calculator
It will be pasted into article text with brackets.
Press "Save". On save page you can preview your article and decide that it is ready for publishing. Article publishing assigns unique URL to the article and lists it on site navigation.