InfoBox

<ItemImage id={} />

Usage:

<Template name="InfoBox">
  <Arg name="name">Steel Ingot</Arg>
  <Arg name="icon">minecraft:iron_ingot</Arg>
  <Arg name="note">Smelted from iron.</Arg>
</Template>

Every argument is optional; name falls back to Untitled, icon to minecraft:stone, and an absent note prints nothing at all.