Usually 
will take care of spacing things on the page
correctly. For instance, it puts in a little extra space around
Theorems to separate them from the text.
However, you may occasionally want to make a space yourself
in order, for example, to leave room to paste in a figure (the good
old-fashioned way).
To do this, use the command \vskip.
It takes an argument
directly following the ``p'' (without an intervening space).
For example,
...the following diagram. \vskip100ptputs 100 points of space between the line ending at ``diagram'' and the next block of text. The argument could also have been in inches, e.g.
\vskip.25in.
If you try to skip more space than there is left at the bottom
of the page it will just skip to the bottom of the page. To add space at the
beginning of a page, use \vglue instead of \vskip.
There are some other commands which affect the spacing of text.
Again, you will usually not need to use these, since will
take care of spacing things properly.
\newpage skips to a new page.\newline skips to next line.\linebreak:
This is best explained by example:
...This is the end of the line. \linebreak This is where I want to start the next line.generates the text:
\newline instead to let the
line end at its natural point.