This is type of health indicator.

• Value (default). It shows exact health and maximum health of creature. Example:
  Spider <100 / 100>
• Percentage. Example:
  Spider <100%>
• Both - means value and percentage. Example:
  Spider <100 / 100 100%>
• Variation. This is option for those who like hardcore. It hides a part of information about health. Example:
  Spider <90 (±10%)>

Type of brackets in indicator. Note that DST supports all brackets but DS (single player version) doesn't support some brackets. Examples:

Black List of prefabs. It's enabled by default. It's recommended to use this option, because it improves compatibility. On the other hand some mods can add health to standard objects and you won't see it. For example, some mod may add health to rocks or grass.
Note that there is White List deep in the mod and it's always enabled. It contains all known prefabs with health. Sometimes I update it.
NB: Don't try to change white or black list manually! You can only disable Black List in settings if you like but this is usually not necessary.

Automatic detection of unknown objects. More types of objects, less compatibility.
The mod uses game tags system to check whether the necessary the addition of health. Usually it is safe. But if your low quality mod adds known tag not in pristine state, Health Info will crash. That's why there is possibility to turn this option off.
Options:

• Ignore. 100% compatibility but you won't see health of mod items, mod characters and mod creatures. Also you won't see health of new objects from fresh updates of the game.
  
• Players (deafult). The mod will check only "player" tag. Very high compatibility. You will see health of ANY mod character on your server. But very rare low quality character mods may crash client if user chose that character.
  
• Creatures. The mod will check only "player", "monster", "animal", "smallcreature", "largecreature" and "epic" tags.
  
• All. All known tags will be used, e.g. "chess", "insect", "hostile" etc. Minimum compatibility with bad mods but Health Info will be still compatible with most popular mods in Steam Workshop.

You may enable this option so unknown new prefabs will be sent to a web server. Later I will be able to update the mod.

This option makes sense only if Show Type == Variation.
Health is inaccurate. Maximum health is hidden. You can set value of variation.

This option makes sense only if Show Type == Variation.
Interval for generating random health values.