Update README.md

README.md

@@ -26,8 +26,8 @@
 
 Data is conveyed either as a vector, a matrix of column vectors,
 or as 2..3 coordinated vectors. With the covariance function,
-two coordinated vectors are processed using the current window
-position somewhat like this `map(cov, window_on_seq1, window_on_seq2)`.
+two vectors are processed within the current window
+like this `map(cov, window_on_seq1, window_on_seq2)`.
 
 Data may be obtained from other `Tables.jl` compatible data structures
 (e.g. dataframes, timeseries) and from similarly read compatible files