In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

El Salvador ( ; -RSB- ) , officially the Republic of El Salvador ( , literally " Republic of The Savior " ) , is the smallest and the most densely populated country in Central America .
El Salvador is the smallest and most densely populated country in Central America .

The boundaries between perennial , intermittent , and ephemeral channels are not defined , and subject to a variety of identification methods adopted by local governments , academics , and others with a need to classify stream-flow permanence .
The differences between perennial , intermittent , and ephemeral streams are not exact and can change if different measures are used by different groups .

The Optional Protocol to the Convention on the Elimination of All Forms of Discrimination against Women is a side-agreement to the Convention which allows its parties to recognise the competence of the Committee on the Elimination of Discrimination Against Women to consider complaints from individuals .

This Convention also have the " Optional Protocol to the Convention on the Elimination of All Forms of Discrimination against Women " .

