Default for scale factor for images

[Lars Vogel <lars.vogel@gmail.com>]

Hi,

for my screenshots I typically add a scale factor of 40 to make the images size well.

<para>

<mediaobject>

<imageobject>

<imagedata fileref="./images/application_model_ui_elements.png" scale="40" />

</imageobject>

<textobject>

<phrase>Application Model UI Elements</phrase>

</textobject>

</mediaobject>

</para>

Is there a general parameter for this? My desired behavior would be that I can define a default for all imageobject which do not specify this parameter but override it for individual imageobject via this parameter.

Best regards, Lars