image file name patten to give when adding image from clipboard,
see http://java.sun.com/j2se/1.4.2/docs/api/java/text/DecimalFormat.html
default: "paste 0", this will result with files named sequentally: "paste 1", "paste 2" and so on.
general purpose check parameter name for upload files, if not null,
each upload file will contain checkbox
with tooltip message specified by generalPurposeCheckboxTooltip,
applet will post parameter with value "true" or "false" (no value is same as false)
corresponding to checkbox state.
image scale dimension callback specifier prefix, if dimension starts with it,
then remainder specifies JS function name to execute to retrieve proper dimension for image scaling.
shows whether file relative path should be preserved as "relativePath" attribute value
when adding directory in explode mode (i.e. not zipping folder content,
but adding all the files in that directory recursively).
upload request properties (headers)
Multiple properties should be separated by '|' character, key/value should be separated by '=',
special characters should be escaped by '\\uXXXX', for example '='=\\u003d
shows whether original image should be uploaded along with scaled images (valid if uploadScaledImages=true),
or if image was transformed with image editor (original file will be posted with "originalImage" file)