In OpenOffice (LibreOffice, ApacheOffice, etc) Writer:
Format>Styles and Formatting
(a window with a number of styles opens)
Select "Default" style, right-click select "Modify"
(a dialog opens with 12 tabs)
Select the <Font> tab
Make any changes you want.
If you want all some future documents to have a template with these characteristics Save the (empty?) document by choosing File>Templates>Save and saving in the "My Templates" directory.
If you want all new documents to use these characteristics by default you have to Choose File>Templates>Organize
find the My Templates in the list on the left and double-click it.
You will see the user-defined templates in the user directory specified under Tools - Options - LibreOffice - Paths.
Select the template you have just saved and open the context menu (right click) or open the submenu of the Commands button.
Choose Set As Default Template. The next time you open a new text document, the new document will be based on the new default template.
All this is from the F1 help searching for "default templates;changing"
The default is portrait.
Default row height in Excel 2007 is 15, if you leave the default font and font size alone. The default row height depends on the default font. For example, if you change the font and font size in Excel Options to Arial 10, the default row height will become the more familar 12.75 from Excel 2003.
Default font size is 12.
Click on start, then control panel, then default programs, and select set your default programs.
The primary function - is the FORMAT tab.
Yes you can change it by setting the styles in the Normal template.
To change the font in Microsoft Word you need to click on the arrow at the top where it should say the name of the font. After you gave clicked the arrow scroll down to whatever font you wanted to use.
The "default" weight is dependent on the browser. But the general weight used is identified in CSS by the keyword "normal" or the number 400. The CSS looks like this .yourClass { font-weight: normal;} or .yourClass {font-weight: 400;} Users can change the default in the browser itself, but it's rare.
Times New Roman. You can change it by editing the NORMAL.DOT template.
Things like Microsoft Word, Openoffice Word processor. They're basically anything you can change font, type in, or edit a word document.
calibri font
HTML doesn't set a default font for display. Browsers, however, set a default font. The particular font depends on the browser and the operating system. The default in Chrome on Windows, for instance, is Times New Roman, 16px. But in Mac of Linux, it's Times, 14px.