This is a test file with some referenced equations, line

::: {}
+:-------------------------------------------------------------:+--------:+
| $$ this $$                                                    | $$(1)$$ |
+---------------------------------------------------------------+---------+
:::

Some equations might be inside of text,

::: {}
+:-------------------------------------------------------------:+--------:+
| $$ for example $$                                             | $$(2)$$ |
+---------------------------------------------------------------+---------+
:::

this one.

Some equations might be on start of paragraphs:

::: {}
+:-------------------------------------------------------------:+--------:+
| $$ start $$                                                   | $$(3)$$ |
+---------------------------------------------------------------+---------+
:::

of paragraph.

Other might be on separate paragraphs of their own:

::: {}
+:-------------------------------------------------------------:+--------:+
| $$ separate $$                                                | $$(4)$$ |
+---------------------------------------------------------------+---------+
:::

Some of those can be labelled:

This is a test file with some referenced equations, line

::: {#eq:0}
+:-------------------------------------------------------------:+--------:+
| $$ this $$                                                    | $$(5)$$ |
+---------------------------------------------------------------+---------+
:::

Some equations might be inside of text,

::: {#eq:1}
+:-------------------------------------------------------------:+--------:+
| $$ for example $$                                             | $$(6)$$ |
+---------------------------------------------------------------+---------+
:::

this one.

Some equations might be on start of paragraphs:

::: {#eq:2}
+:-------------------------------------------------------------:+--------:+
| $$ start $$                                                   | $$(7)$$ |
+---------------------------------------------------------------+---------+
:::

of paragraph.

Other might be on separate paragraphs of their own:

::: {#eq:3}
+:-------------------------------------------------------------:+--------:+
| $$ separate $$                                                | $$(8)$$ |
+---------------------------------------------------------------+---------+
:::

Then they can be referenced:

Individually eq. 5, eq. 6, eq. 7, eq. 8

Or in groups eqns. 5, 6, 8

Groups will be compacted eqns. 5-8