Discourage 'binary' encoding usage

docs/src/apps/jsonrpc-api.md

@@ -157,7 +157,7 @@ Returns all information associated with the account of provided Pubkey
 - `<string>` - Pubkey of account to query, as base-58 encoded string
 - `<object>` - (optional) Configuration object containing the following optional fields:
   - (optional) [Commitment](jsonrpc-api.md#configuring-state-commitment)
-  - (optional) `encoding: <string>` - encoding for Account data, either "binary", "binary64", or jsonParsed". If parameter not provided, the default encoding is "binary". "binary" is base-58 encoded and limited to Account data of less than 128 bytes. "binary64" will return base64 encoded data for Account data of any size.
+  - (optional) `encoding: <string>` - encoding for Account data, either "binary" (*slow*), "binary64", or jsonParsed". If parameter not provided, the default encoding is "binary". "binary" is base-58 encoded and limited to Account data of less than 128 bytes. "binary64" will return base64 encoded data for Account data of any size.
     Parsed-JSON encoding attempts to use program-specific state parsers to return more human-readable and explicit account state data. If parsed-JSON is requested but a parser cannot be found, the field falls back to binary encoding, detectable when the `data` field is type `<string>`. **jsonParsed encoding is UNSTABLE**
   - (optional) `dataSlice: <object>` - limit the returned account data using the provided `offset: <usize>` and `length: <usize>` fields; only available for "binary" or "binary64" encoding.
 
@@ -307,7 +307,7 @@ Returns identity and transaction information about a confirmed block in the ledg
 #### Parameters:
 
 - `<u64>` - slot, as u64 integer
-- `<string>` - (optional) encoding for each returned Transaction, either "json", "jsonParsed", "binary", or "binary64". If parameter not provided, the default encoding is JSON. **jsonParsed encoding is UNSTABLE**
+- `<string>` - (optional) encoding for each returned Transaction, either "json", "jsonParsed", "binary" (*slow*), or "binary64". If parameter not provided, the default encoding is JSON. **jsonParsed encoding is UNSTABLE**
   Parsed-JSON encoding attempts to use program-specific instruction parsers to return more human-readable and explicit data in the `transaction.message.instructions` list. If parsed-JSON is requested but a parser cannot be found, the instruction falls back to regular JSON encoding (`accounts`, `data`, and `programIdIndex` fields).
 
 #### Results:
@@ -465,7 +465,7 @@ Returns transaction details for a confirmed transaction
 
 - `<string>` - transaction signature as base-58 encoded string
 N encoding attempts to use program-specific instruction parsers to return more human-readable and explicit data in the `transaction.message.instructions` list. If parsed-JSON is requested but a parser cannot be found, the instruction falls back to regular JSON encoding (`accounts`, `data`, and `programIdIndex` fields).
-- `<string>` - (optional) encoding for the returned Transaction, either "json", "jsonParsed", "binary", or "binary64". **jsonParsed encoding is UNSTABLE**
+- `<string>` - (optional) encoding for the returned Transaction, either "json", "jsonParsed", "binary" (*slow*), or "binary64". If parameter not provided, the default encoding is JSON. **jsonParsed encoding is UNSTABLE**
 
 #### Results:
 
@@ -845,7 +845,7 @@ Returns all accounts owned by the provided program Pubkey
 - `<string>` - Pubkey of program, as base-58 encoded string
 - `<object>` - (optional) Configuration object containing the following optional fields:
   - (optional) [Commitment](jsonrpc-api.md#configuring-state-commitment)
-  - (optional) `encoding: <string>` - encoding for Account data, either "binary", "binary64" or jsonParsed". If parameter not provided, the default encoding is binary.
+  - (optional) `encoding: <string>` - encoding for Account data, either "binary" (*slow*), "binary64" or jsonParsed". If parameter not provided, the default encoding is binary.
     Parsed-JSON encoding attempts to use program-specific state parsers to return more human-readable and explicit account state data. If parsed-JSON is requested but a parser cannot be found, the field falls back to binary encoding, detectable when the `data` field is type `<string>`. **jsonParsed encoding is UNSTABLE**
   - (optional) `dataSlice: <object>` - limit the returned account data using the provided `offset: <usize>` and `length: <usize>` fields; only available for "binary" or "binary64" encoding.
   - (optional) `filters: <array>` - filter results using various [filter objects](jsonrpc-api.md#filters); account must meet all filter criteria to be included in results
@@ -1100,7 +1100,7 @@ Returns all SPL Token accounts by approved Delegate. **UNSTABLE**
   * `programId: <string>` - Pubkey of the Token program ID that owns the accounts, as base-58 encoded string
 - `<object>` - (optional) Configuration object containing the following optional fields:
   - (optional) [Commitment](jsonrpc-api.md#configuring-state-commitment)
-  - (optional) `encoding: <string>` - encoding for Account data, either "binary", "binary64" or jsonParsed". If parameter not provided, the default encoding is binary.
+  - (optional) `encoding: <string>` - encoding for Account data, either "binary" (*slow*), "binary64" or jsonParsed". If parameter not provided, the default encoding is binary.
     Parsed-JSON encoding attempts to use program-specific state parsers to return more human-readable and explicit account state data. If parsed-JSON is requested but a parser cannot be found, the field falls back to binary encoding, detectable when the `data` field is type `<string>`. **jsonParsed encoding is UNSTABLE**
   - (optional) `dataSlice: <object>` - limit the returned account data using the provided `offset: <usize>` and `length: <usize>` fields; only available for "binary" or "binary64" encoding.
 
@@ -1137,7 +1137,7 @@ Returns all SPL Token accounts by token owner. **UNSTABLE**
   * `programId: <string>` - Pubkey of the Token program ID that owns the accounts, as base-58 encoded string
 - `<object>` - (optional) Configuration object containing the following optional fields:
   - (optional) [Commitment](jsonrpc-api.md#configuring-state-commitment)
-  - (optional) `encoding: <string>` - encoding for Account data, either "binary", "binary64" or jsonParsed". If parameter not provided, the default encoding is binary.
+  - (optional) `encoding: <string>` - encoding for Account data, either "binary" (*slow*), "binary64" or jsonParsed". If parameter not provided, the default encoding is binary.
     Parsed-JSON encoding attempts to use program-specific state parsers to return more human-readable and explicit account state data. If parsed-JSON is requested but a parser cannot be found, the field falls back to binary encoding, detectable when the `data` field is type `<string>`. **jsonParsed encoding is UNSTABLE**
   - (optional) `dataSlice: <object>` - limit the returned account data using the provided `offset: <usize>` and `length: <usize>` fields; only available for "binary" or "binary64" encoding.
 
@@ -1457,7 +1457,7 @@ Subscribe to an account to receive notifications when the lamports or data for a
 - `<string>` - account Pubkey, as base-58 encoded string
 - `<object>` - (optional) Configuration object containing the following optional fields:
   - `<object>` - (optional) [Commitment](jsonrpc-api.md#configuring-state-commitment)
-  - (optional) `encoding: <string>` - encoding for Account data, either "binary", "binary64" or jsonParsed". If parameter not provided, the default encoding is binary.
+  - (optional) `encoding: <string>` - encoding for Account data, either "binary" (*slow*), "binary64" or jsonParsed". If parameter not provided, the default encoding is binary.
     Parsed-JSON encoding attempts to use program-specific state parsers to return more human-readable and explicit account state data. If parsed-JSON is requested but a parser cannot be found, the field falls back to binary encoding, detectable when the `data` field is type `<string>`. **jsonParsed encoding is UNSTABLE**
 
 #### Results:
@@ -1567,7 +1567,7 @@ Subscribe to a program to receive notifications when the lamports or data for a
 - `<string>` - program_id Pubkey, as base-58 encoded string
 - `<object>` - (optional) Configuration object containing the following optional fields:
   - (optional) [Commitment](jsonrpc-api.md#configuring-state-commitment)
-  - (optional) `encoding: <string>` - encoding for Account data, either "binary", "binary64" or jsonParsed". If parameter not provided, the default encoding is binary.
+  - (optional) `encoding: <string>` - encoding for Account data, either "binary" (*slow*), "binary64" or jsonParsed". If parameter not provided, the default encoding is binary.
     Parsed-JSON encoding attempts to use program-specific state parsers to return more human-readable and explicit account state data. If parsed-JSON is requested but a parser cannot be found, the field falls back to binary encoding, detectable when the `data` field is type `<string>`. **jsonParsed encoding is UNSTABLE**
   - (optional) `filters: <array>` - filter results using various [filter objects](jsonrpc-api.md#filters); account must meet all filter criteria to be included in results