# Functions
FirstLine returns the first line of the file.
LastLine returns the last line of the file.
NewProgressScanner returns a Scanner with progress indicator.
NewRangeReader returns a RangeReader, which will read the range of content from file.
SplitLineChunks splits file into chunks.
# Structs
OffsetRange represents a content block of a file.
A RangeReader is used to read a range of content from a file.
# Interfaces
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