Use html タグ to modify your text styles. Here are the supported tags.
Font styles:
bold
italics
underline
Hyperlinks:
link
Images:
(Once あなた have uploaded "bottom images" あなた can embed them into the article)

where <#> is the number of the bottom image,
<horiz-align> is left, center, または right,
and <size> is large, medium, または small.
For example, will embed bottom image #1, centered, and at full size. The embeded image will not be displayed belo