message: docs: edit algorithms#7 - clade assignment
diff: @@ -75,13 +75,11 @@ In addition to the overall number of such private mutations, Nextclade also asse
  ### 7. Clade assignment
  -To facilitate discussion of the co-circulating variants of viruses, Nextstrain projects group them into **clades**, which are defined by specific combination of signature mutations. Clades are groups of related sequences that share a common ancestor. We try to align these clades as much as possible with [WHO variant designations](https://www.who.int/en/activities/tracking-SARS-CoV-2-variants/).
  +To ease discussion of co-circulating virus variants, Nextstrain groups them into **clades**, which are defined by specific combination of signature mutations. Clades are groups of related sequences that share a common ancestor. For SARS-CoV-2, we try to align these clades as much as possible with [WHO variant designations](https://www.who.int/en/activities/tracking-SARS-CoV-2-variants/).
  -The analysis pipeline of [Nextstrain.org](https://nextstrain.org) uses phylogenetic context to build the tree and to assign clades. This currently requires setting up a pipeline and running a heavy computational job.
  +In contrast to [Nextstrain.org's](https://nextstrain.org) analysis pipeline, which requires setting up and running a heavy computational job to assign clades, Nextclade takes a lightweight approach, and assigns your sequences to clades by placing them on a phylogenetic tree that is annotated with clade definitions. More specifically, Nextclade assigns the clade of the nearest tree node/tip found in the "Phylogenetic placement" step, above. This is an accuracy to runtime performance trade-off - Nextclade provides almost instantaneous result, but is expected to be slightly less accurate than the full pipeline.
  -By contrast, Nextclade takes a lightweight approach, and assigns your sequences to clades by placing them on a phylogenetic tree annotated with clade definitions. More specifically, Nextclade looks at the clade of the nearest tree node found in the "Phylogenetic placement" step. This is an accuracy to runtime performance trade-off - Nextclade provides almost instantaneous result, but is expected to be slightly less sensitive than the full pipeline.
  -
  -Note: Nextclade only considers clades present in the reference tree. It is important to make sure every clade that you expect to find in the results is well represented in the reference tree. If unsure, use one of the default trees or any other up-to-date and sufficiently diverse tree. For focal regional studies it is recommended to also include clades that are specific for your region.
  +Note: Nextclade only considers those clades which are present in the reference tree. It is important to make sure that every that you expect to find in the results is well represented in the reference tree. If unsure, use one of the default trees or any other up-to-date and sufficiently diverse tree. For focal regional studies, it is recommended to specifically include clades that are specific for your region.
  #### Nextstrain clades for SARS-CoV-2
  