[docs] rename plane/visual sections to regions

USAGE.md

@@ -961,7 +961,7 @@ It is an error to invoke these functions on the standard plane.
 ```c
 // Resize the specified ncplane. The four parameters 'keepy', 'keepx',
 // 'keepleny', and 'keeplenx' define a subset of the ncplane to keep,
-// unchanged. This may be a section of size 0, though none of these four
+// unchanged. This may be a region of size 0, though none of these four
 // parameters may be negative. 'keepx' and 'keepy' are relative to the ncplane.
 // They must specify a coordinate within the ncplane's totality. 'yoff' and
 // 'xoff' are relative to 'keepy' and 'keepx', and place the upper-left corner
@@ -3321,8 +3321,8 @@ typedef struct ncvgeom {
   unsigned rpixy, rpixx;   // rendered pixel geometry (per visual_options)
   unsigned rcelly, rcellx; // rendered cell geometry (per visual_options)
   unsigned scaley, scalex; // pixels per filled cell (scale == c for bitmaps)
-  unsigned begy, begx;     // upper-left corner of used section
-  unsigned leny, lenx;     // geometry of used section
+  unsigned begy, begx;     // upper-left corner of used region
+  unsigned leny, lenx;     // geometry of used region
   unsigned maxpixely, maxpixelx; // only defined for NCBLIT_PIXEL
   ncblitter_e blitter;     // blitter that will be used
 } ncvgeom;
@@ -3439,12 +3439,12 @@ struct ncvisual_options {
   // value if NCVISUAL_OPTION_HORALIGNED is provided. y is an ncalign_e
   // value if NCVISUAL_OPTION_VERALIGNED is provided.
   int y, x;
-  // the section of the visual that ought be rendered. for the entire visual,
+  // the region of the visual that ought be rendered. for the entire visual,
   // pass an origin of 0, 0 and a size of 0, 0 (or the true height and width).
   // these numbers are all in terms of ncvisual pixels. negative values are
   // prohibited.
-  int begy, begx; // origin of rendered section
-  int leny, lenx; // size of rendered section
+  int begy, begx; // origin of rendered region
+  int leny, lenx; // size of rendered region
   // use NCBLIT_DEFAULT if you don't care, an appropriate blitter will be
   // chosen for your terminal, given your scaling. NCBLIT_PIXEL is never
   // chosen for NCBLIT_DEFAULT.

doc/man/man3/notcurses_visual.3.md

@@ -42,8 +42,8 @@ struct ncvisual_options {
   struct ncplane* n;
   ncscale_e scaling;
   int y, x;
-  int begy, begx; // origin of rendered section
-  int leny, lenx; // size of rendered section
+  int begy, begx; // origin of rendered region
+  int leny, lenx; // size of rendered region
   ncblitter_e blitter; // glyph set to use
   uint64_t flags; // bitmask over NCVISUAL_OPTION_*
   uint32_t transcolor; // use this color for ADDALPHA
@@ -58,8 +58,8 @@ typedef struct ncvgeom {
   unsigned rpixy, rpixx;   // rendered pixel geometry (per visual_options)
   unsigned rcelly, rcellx; // rendered cell geometry (per visual_options)
   unsigned scaley, scalex; // pixels per filled cell (scale == c for bitmaps)
-  unsigned begy, begx;     // upper-left corner of used section
-  unsigned leny, lenx;     // geometry of used section
+  unsigned begy, begx;     // upper-left corner of used region
+  unsigned leny, lenx;     // geometry of used region
   unsigned maxpixely, maxpixelx; // only defined for NCBLIT_PIXEL
   ncblitter_e blitter;i    // blitter that will be used
 } ncvgeom;
@@ -176,7 +176,7 @@ of its **struct ncvisual_options**. If ***n*** is not **NULL**, it specifies the
 plane on which to render, and ***y***/***x*** specify a location within that plane.
 Otherwise, a new plane will be created, and placed at ***y***/***x*** relative to
 the rendering area. ***begy***/***begx*** specify the upper left corner of a
-subsection of the **ncvisual** to render, while ***leny***/***lenx*** specify the
+subregion of the **ncvisual** to render, while ***leny***/***lenx*** specify the
 geometry of same. ***flags*** is a bitfield over:
 
 * **NCVISUAL_OPTION_NODEGRADE** If the specified blitter is not available, fail rather than degrading.
@@ -211,7 +211,7 @@ through the bottom right corner of the image.
 
 The ***n*** field specifies the plane to use. If this is **NULL**, a new plane
 will be created, having the precise geometry necessary to blit the specified
-section of the image. This might be larger (or smaller) than the visual area.
+region of the image. This might be larger (or smaller) than the visual area.
 
 ***y*** and ***x*** have different meanings depending on whether or not
 ***n*** is **NULL**. If not (drawing onto a preexisting plane), they specify

include/notcurses/notcurses.h

@@ -1615,7 +1615,7 @@ API void notcurses_stats_reset(struct notcurses* nc, ncstats* stats)
 
 // Resize the specified ncplane. The four parameters 'keepy', 'keepx',
 // 'keepleny', and 'keeplenx' define a subset of the ncplane to keep,
-// unchanged. This may be a section of size 0, though none of these four
+// unchanged. This may be a region of size 0, though none of these four
 // parameters may be negative. 'keepx' and 'keepy' are relative to the ncplane.
 // They must specify a coordinate within the ncplane's totality. 'yoff' and
 // 'xoff' are relative to 'keepy' and 'keepx', and place the upper-left corner
@@ -3065,12 +3065,12 @@ struct ncvisual_options {
   // value if NCVISUAL_OPTION_HORALIGNED is provided. y is an ncalign_e if
   // NCVISUAL_OPTION_VERALIGNED is provided.
   int y, x;
-  // the section of the visual that ought be rendered. for the entire visual,
+  // the region of the visual that ought be rendered. for the entire visual,
   // pass an origin of 0, 0 and a size of 0, 0 (or the true height and width).
   // these numbers are all in terms of ncvisual pixels. negative values are
   // prohibited.
-  unsigned begy, begx; // origin of rendered section in pixels
-  unsigned leny, lenx; // size of rendered section in pixels
+  unsigned begy, begx; // origin of rendered region in pixels
+  unsigned leny, lenx; // size of rendered region in pixels
   // use NCBLIT_DEFAULT if you don't care, an appropriate blitter will be
   // chosen for your terminal, given your scaling. NCBLIT_PIXEL is never
   // chosen for NCBLIT_DEFAULT.
@@ -3107,8 +3107,8 @@ typedef struct ncvgeom {
   unsigned rpixy, rpixx;   // rendered pixel geometry (per visual_options)
   unsigned rcelly, rcellx; // rendered cell geometry (per visual_options)
   unsigned scaley, scalex; // pixels per filled cell (scale == c for bitmaps)
-  unsigned begy, begx;     // upper-left corner of used section
-  unsigned leny, lenx;     // geometry of used section
+  unsigned begy, begx;     // upper-left corner of used region
+  unsigned leny, lenx;     // geometry of used region
   unsigned maxpixely, maxpixelx; // only defined for NCBLIT_PIXEL
   ncblitter_e blitter;     // blitter that will be used
 } ncvgeom;

src/demo/eagle.c

@@ -28,7 +28,7 @@ zoom_map(struct notcurses* nc, const char* map, int* ret){
   struct ncplane* n = notcurses_stdplane(nc);
   *ret = -1;
   // determine size that will be represented on screen at once, and how
-  // large that section has been rendered in the outzoomed map. take the map
+  // large that region has been rendered in the outzoomed map. take the map
   // and begin opening it on larger and larger planes that fit on the screen
   // less and less. eventually, reach our natural NCSCALE_NONE size and begin
   // scrolling through the map, whooooooooosh.