doc: rework the opening paragraph

README.md

@@ -11,13 +11,17 @@
 
 ## About
 
-This extension equips DataLad with the functionality to generate file content on
-demand, based on a specified set of instructions. This is particularly useful
-when the file content can be (re)obtained deterministically. If storing the
-file content is more expensive than (re)generating it, this functionality can
-lead to more effective resource utilization. Thus, this extension may be of
-interest to a wide, interdisciplinary audience, including researchers, data
-curators, and infrastructure administrators.
+This extension equips DataLad with the functionality to (re)compute file
+content on demand, based on a specified set of instructions. In particular,
+it features a `datalad make` command for capturing instructions on how to
+compute a given file, allowing the file content to be safely removed. It also
+implements a git-annex special remote, which enables the (re)computation of
+the file content based on the captured instructions. This is particularly
+useful when the file content can be produced deterministically. If storing
+the file content is more expensive than (re)producing it, this functionality
+can lead to more effective resource utilization. Thus, this extension may be
+of interest to a wide, interdisciplinary audience, including researchers,
+data curators, and infrastructure administrators.
 
 
 ## How it works